The pesca package

Pesca is a program that helps in the construction of proofs
in sequent calculus. It works both as a proof editor and as an automatic theorem
prover. Proofs constructed in Pesca can both be seen on the terminal and printed
into LaTeX files.

The user of Pesca can choose among different versions of classical and
intuitionistic proposition and predicate calculi, and extend them by systems of
nonlogical axioms. The implementation of Pesca is written in the
functional programming language Haskell.

Downloads

Maintainers' corner

Readme for pesca-4.0.1

PESCA = Proof Editor for Sequent Calculus
(Companion to the book Structural Proof Theory by Sara Negri and Jan von Plato,
to appear at Cambridge University Press)
(c) Aarne Ranta 24/3/2000.
To run under Unix, type
./pesca
To the PESCA prompt |-, type
?
to see the available commands, or
m
to see the manual (the latter assumes latex and xdvi are on your path).
The pesca shell script assumes the Haskell interpreter hugs is on your path.
You can also compile the Haskell source code by hbc or ghc; the Main module is
in the file Editor.hs.
http://www.cs.chalmers.se/~aarne/pesca/